fix read data

Signed-off-by: monkey <golang@88.com>

command.go

@@ -1879,11 +1879,7 @@ func (cmd *XInfoStreamFullCmd) readReply(rd *proto.Reader) error {
 		case "entries":
 			cmd.val.Entries, err = readXMessageSlice(rd)
 		case "groups":
-			groups, err := rd.ReadReply(readStreamGroups)
-			if err != nil {
-				return err
-			}
-			cmd.val.Groups = groups.([]XInfoStreamGroup)
+			cmd.val.Groups, err = readStreamGroups(rd)
 		default:
 			return fmt.Errorf("redis: unexpected content %s "+
 				"in XINFO STREAM reply", key)
@@ -1895,9 +1891,13 @@ func (cmd *XInfoStreamFullCmd) readReply(rd *proto.Reader) error {
 	return nil
 }
 
-func readStreamGroups(rd *proto.Reader, n int64) (interface{}, error) {
+func readStreamGroups(rd *proto.Reader) ([]XInfoStreamGroup, error) {
+	n, err := rd.ReadArrayLen()
+	if err != nil {
+		return nil, err
+	}
 	groups := make([]XInfoStreamGroup, 0, n)
-	for i := int64(0); i < n; i++ {
+	for i := 0; i < n; i++ {
 		nn, err := rd.ReadArrayLen()
 		if err != nil {
 			return nil, err
@@ -1906,31 +1906,34 @@ func readStreamGroups(rd *proto.Reader, n int64) (interface{}, error) {
 			return nil, fmt.Errorf("redis: got %d elements in XINFO STREAM FULL reply,"+
 				"wanted 10", nn)
 		}
-		key, err := rd.ReadString()
-		if err != nil {
-			return nil, err
-		}
 
 		group := XInfoStreamGroup{}
 
-		switch key {
-		case "name":
-			group.Name, err = rd.ReadString()
-		case "last-delivered-id":
-			group.LastDeliveredID, err = rd.ReadString()
-		case "pel-count":
-			group.PelCount, err = rd.ReadIntReply()
-		case "pending":
-			group.Pending, err = readXInfoStreamGroupPending(rd)
-		case "consumers":
-			group.Consumers, err = readXInfoStreamConsumers(rd)
-		default:
-			return nil, fmt.Errorf("redis: unexpected content %s "+
-				"in XINFO STREAM reply", key)
-		}
+		for f := 0; f < 5; f++ {
+			key, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
 
-		if err != nil {
-			return nil, err
+			switch key {
+			case "name":
+				group.Name, err = rd.ReadString()
+			case "last-delivered-id":
+				group.LastDeliveredID, err = rd.ReadString()
+			case "pel-count":
+				group.PelCount, err = rd.ReadIntReply()
+			case "pending":
+				group.Pending, err = readXInfoStreamGroupPending(rd)
+			case "consumers":
+				group.Consumers, err = readXInfoStreamConsumers(rd)
+			default:
+				return nil, fmt.Errorf("redis: unexpected content %s "+
+					"in XINFO STREAM reply", key)
+			}
+
+			if err != nil {
+				return nil, err
+			}
 		}
 
 		groups = append(groups, group)
@@ -2004,71 +2007,71 @@ func readXInfoStreamConsumers(rd *proto.Reader) ([]XInfoStreamConsumer, error) {
 				"wanted 8", nn)
 		}
 
-		cKey, err := rd.ReadString()
-		if err != nil {
-			return nil, err
-		}
-
 		c := XInfoStreamConsumer{}
 
-		switch cKey {
-		case "name":
-			c.Name, err = rd.ReadString()
-		case "seen-time":
-			seen, err := rd.ReadIntReply()
-			if err != nil {
-				return nil, err
-			}
-			c.SeenTime = time.Unix(seen/1000, seen%1000*int64(time.Millisecond))
-		case "pel-count":
-			c.PelCount, err = rd.ReadIntReply()
-		case "pending":
-			pendingNumber, err := rd.ReadArrayLen()
+		for f := 0; f < 4; f++ {
+			cKey, err := rd.ReadString()
 			if err != nil {
 				return nil, err
 			}
 
-			c.Pending = make([]XInfoStreamConsumerPending, 0, pendingNumber)
-
-			for f := 0; f < pendingNumber; f++ {
-				nn, err := rd.ReadArrayLen()
+			switch cKey {
+			case "name":
+				c.Name, err = rd.ReadString()
+			case "seen-time":
+				seen, err := rd.ReadIntReply()
 				if err != nil {
 					return nil, err
 				}
-				if nn != 3 {
-					return nil, fmt.Errorf("redis: got %d elements in XINFO STREAM reply,"+
-						"wanted 3", nn)
-				}
-
-				p := XInfoStreamConsumerPending{}
-
-				p.ID, err = rd.ReadString()
+				c.SeenTime = time.Unix(seen/1000, seen%1000*int64(time.Millisecond))
+			case "pel-count":
+				c.PelCount, err = rd.ReadIntReply()
+			case "pending":
+				pendingNumber, err := rd.ReadArrayLen()
 				if err != nil {
 					return nil, err
 				}
 
-				delivery, err := rd.ReadIntReply()
-				if err != nil {
-					return nil, err
-				}
-				p.DeliveryTime = time.Unix(delivery/1000, delivery%1000*int64(time.Millisecond))
+				c.Pending = make([]XInfoStreamConsumerPending, 0, pendingNumber)
 
-				p.DeliveryCount, err = rd.ReadIntReply()
-				if err != nil {
-					return nil, err
-				}
+				for f := 0; f < pendingNumber; f++ {
+					nn, err := rd.ReadArrayLen()
+					if err != nil {
+						return nil, err
+					}
+					if nn != 3 {
+						return nil, fmt.Errorf("redis: got %d elements in XINFO STREAM reply,"+
+							"wanted 3", nn)
+					}
 
-				c.Pending = append(c.Pending, p)
+					p := XInfoStreamConsumerPending{}
+
+					p.ID, err = rd.ReadString()
+					if err != nil {
+						return nil, err
+					}
+
+					delivery, err := rd.ReadIntReply()
+					if err != nil {
+						return nil, err
+					}
+					p.DeliveryTime = time.Unix(delivery/1000, delivery%1000*int64(time.Millisecond))
+
+					p.DeliveryCount, err = rd.ReadIntReply()
+					if err != nil {
+						return nil, err
+					}
+
+					c.Pending = append(c.Pending, p)
+				}
+			default:
+				return nil, fmt.Errorf("redis: unexpected content %s "+
+					"in XINFO STREAM reply", cKey)
+			}
+			if err != nil {
+				return nil, err
 			}
-		default:
-			return nil, fmt.Errorf("redis: unexpected content %s "+
-				"in XINFO STREAM reply", cKey)
 		}
-
-		if err != nil {
-			return nil, err
-		}
-
 		consumers = append(consumers, c)
 	}